mirror of https://github.com/efabless/caravel.git
48 lines
1.4 KiB
Plaintext
48 lines
1.4 KiB
Plaintext
*---------------------------------------------------------------------------
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* SPDX-FileCopyrightText: 2020 Efabless Corporation
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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*---------------------------------------------------------------------------
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* Threshold test for POR circuit
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* Determine gate voltage at which the HV NFET draws 240nA nominal
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*
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* Result: 0.7575V
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*-------------------------------------------------------------------
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.lib /home/tim/projects/efabless/tech/SW/sky130A/libs.tech/ngspice/sky130.lib.spice tt
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*----------------------------
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* Testbench circuit
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*----------------------------
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Rtest vdda mir1 1MEG
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Xm1 mir1 vin vss vss sky130_fd_pr__nfet_g5v0d10v5 w=2 l=0.8
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Vgate vin vss DC=0
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Vpwr vdda vss DC=3.3
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Rgnd vss 0 0.1
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*----------------------------
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* Testbench control
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*----------------------------
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.control
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* DC sweep from 0.7 to 0.8V
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dc Vgate 0.7 0.8 0.001
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wrdata test.data Vpwr#branch vin
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.endc
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.end
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